A future of friendlier skies? Airport congestion remains a major problem, despite a decrease in the number of people flying. Will a modernized air traffic control system and radically redesigned airplanes help relieve the traffic at America's airports?9:06 a.m.
Clinton Oster: Aviation expert and professor of public and environmental affairs at Indiana University. His most recent book is "Managing the Skies: Public Policy, Organization, and Financing of Air Navigation."
Edward Faberman: Executive director of the Air Carrier Association of America.
Clive Irving: Travel writer and senior consulting editor for Conde Nast Traveler.
Music and the shaping of humanity A musician-turned neuroscientist suggests that evolution had a hand in how we respond to music. He chose six songs as examples of how we achieve cooperative goals like acquiring knowledge and love. He also explains why The Beatles' failure to imitate their musical heroes made them stars.10:06 a.m.
Daniel Levitin: Professor of psychology at McGill University and author of "The World in Six Songs."